Torcular lesion encroach supratentorial and infratentorial compartments saddling or invading the big sinuses leading to torrential bleeding, which may need repair with venous or arterial graft. A case is, hereby, reported that presented with headache and an occipital swelling. CT scan showed torcular osteolytic tumor extending out beneath the scalp and into the posterior cranial fossa and causing fourth ventricular blockage. It needed two-stage surgery for complete excision. All the big venous sinuses near the lesion were protected. The dural gap was filled with fascia lata graft. Histopathology report revealed as malignant tumor of bony origin.